Sergio Perez expects to be "very emotional" when he takes part in his final race for Sauber at next weekend's Brazilian Grand Prix.

Following an impressive first two thirds of the season in which he scored three podiums, Perez was signed by McLaren to replace the outgoing Lewis Hamilton. However, he has yet to score a point since the move was confirmed, and Perez admits that it's been an inconsistent season but thanked the team for the help which had led to his move.

"The Brazilian Grand Prix will be the last race of a very long season that has seen a lot of ups and downs, and it will be a very special event for me as it is the last race I will drive for my team of Sauber before I leave," Perez said. "It is a great team and I want to thank everybody for everything they have done for me over the last two years. I am sure it will be very emotional for me in Interlagos."

Sauber is still in with a chance of overhauling Mercedes for fifth in the constructors' championship as it sits 12 points behind in the standings, and Perez said that was his target before leaving.

"The best way to say thank you, of course, would be a great result and to beat the team in front of us. This is my target. The Interlagos circuit is very nice and it also has a great atmosphere with the fans. The support for Formula One is huge there. The Senna S corners are my favourite part of the circuit. I believe and I hope our car should be good enough there for a strong top ten position."